Assessment of vertical Subsidence in urban area using MT InSAR

As the urbanization is increasing at a rapid phase there has been an urgent need to study on the urban subsidence. The study gives a comprehensive analysis of urban subsidence in the Dwarka region of New Delhi, India, using advanced Interferometric Synthetic Aperture Radar (InSAR) techniques. [1] Utilizing time-series InSAR data, there has been a detailed spatial analysis to detect vertical displacement patterns indicative of urban subsidence. The analysis revealed significant subsidence rates across various parts of Dwarka, with some regions exhibiting displacement rates of up to ±6 $\mathrm{mm} / \mathrm{year}$. The spatial correlation between the detected subsidence and the urban infrastructure, particularly in high-density residential areas, underscores the critical importance of continuous monitoring. The study concludes on the effectiveness of InSAR in urban subsidence detection using Small Baseline Subset (SBAS) technique, offering valuable insights for urban planners and policymakers in mitigating potential infrastructure risks.